Stable Numbers
Age Calculator
Enter your date of birth to see your exact age in years, months and days. You can set a custom target date to check your age on a past or future date. The tool also shows your next birthday and total days lived.
Blank uses today.
About this calculator
This age calculator works out your exact age from your date of birth. It reports years, months and days, shows how many days you have lived, and gives the date of your next birthday along with the number of days until it arrives. If you are checking ages for forms or milestones, the target date option lets you see what your age would be on a past or future date without changing today’s date on your device.
The calculation handles leap years and varying month lengths. Results use your local time and the browser’s clock, so if your system time is incorrect the outputs may be off. For newborns and very young children, healthcare often measures age in weeks or corrected age which this tool does not cover. For official records or applications always follow the instructions provided and use the exact format they ask for.
If you need to compare ages for eligibility windows, pair this with our date difference tool when that is available. For now, this page should give you quick and accurate answers to the most common age questions.
Explore more in the calculators hub.